| package org.onlab.onos.provider.of.flow.impl; |
| |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.felix.scr.annotations.Activate; |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.Deactivate; |
| import org.apache.felix.scr.annotations.Reference; |
| import org.apache.felix.scr.annotations.ReferenceCardinality; |
| import org.onlab.onos.ApplicationId; |
| import org.onlab.onos.net.DeviceId; |
| import org.onlab.onos.net.flow.FlowEntry; |
| import org.onlab.onos.net.flow.FlowRule; |
| import org.onlab.onos.net.flow.FlowRuleProvider; |
| import org.onlab.onos.net.flow.FlowRuleProviderRegistry; |
| import org.onlab.onos.net.flow.FlowRuleProviderService; |
| import org.onlab.onos.net.provider.AbstractProvider; |
| import org.onlab.onos.net.provider.ProviderId; |
| import org.onlab.onos.net.topology.TopologyService; |
| import org.onlab.onos.openflow.controller.Dpid; |
| import org.onlab.onos.openflow.controller.OpenFlowController; |
| import org.onlab.onos.openflow.controller.OpenFlowEventListener; |
| import org.onlab.onos.openflow.controller.OpenFlowSwitch; |
| import org.onlab.onos.openflow.controller.OpenFlowSwitchListener; |
| import org.onlab.onos.openflow.controller.RoleState; |
| import org.projectfloodlight.openflow.protocol.OFActionType; |
| import org.projectfloodlight.openflow.protocol.OFFlowRemoved; |
| import org.projectfloodlight.openflow.protocol.OFFlowStatsEntry; |
| import org.projectfloodlight.openflow.protocol.OFFlowStatsReply; |
| import org.projectfloodlight.openflow.protocol.OFInstructionType; |
| import org.projectfloodlight.openflow.protocol.OFMessage; |
| import org.projectfloodlight.openflow.protocol.OFPortStatus; |
| import org.projectfloodlight.openflow.protocol.OFStatsReply; |
| import org.projectfloodlight.openflow.protocol.OFStatsReplyFlags; |
| import org.projectfloodlight.openflow.protocol.OFStatsType; |
| import org.projectfloodlight.openflow.protocol.OFVersion; |
| import org.projectfloodlight.openflow.protocol.action.OFAction; |
| import org.projectfloodlight.openflow.protocol.action.OFActionOutput; |
| import org.projectfloodlight.openflow.protocol.instruction.OFInstruction; |
| import org.projectfloodlight.openflow.protocol.instruction.OFInstructionApplyActions; |
| import org.projectfloodlight.openflow.types.OFPort; |
| import org.slf4j.Logger; |
| |
| import com.google.common.collect.ArrayListMultimap; |
| import com.google.common.collect.Maps; |
| import com.google.common.collect.Multimap; |
| |
| /** |
| * Provider which uses an OpenFlow controller to detect network |
| * end-station hosts. |
| */ |
| @Component(immediate = true) |
| public class OpenFlowRuleProvider extends AbstractProvider implements FlowRuleProvider { |
| |
| private final Logger log = getLogger(getClass()); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected FlowRuleProviderRegistry providerRegistry; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected OpenFlowController controller; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected TopologyService topologyService; |
| |
| private FlowRuleProviderService providerService; |
| |
| private final InternalFlowProvider listener = new InternalFlowProvider(); |
| |
| /** |
| * Creates an OpenFlow host provider. |
| */ |
| public OpenFlowRuleProvider() { |
| super(new ProviderId("of", "org.onlab.onos.provider.openflow")); |
| } |
| |
| @Activate |
| public void activate() { |
| providerService = providerRegistry.register(this); |
| controller.addListener(listener); |
| controller.addEventListener(listener); |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| providerRegistry.unregister(this); |
| providerService = null; |
| |
| log.info("Stopped"); |
| } |
| @Override |
| public void applyFlowRule(FlowRule... flowRules) { |
| for (int i = 0; i < flowRules.length; i++) { |
| applyRule(flowRules[i]); |
| } |
| } |
| |
| private void applyRule(FlowRule flowRule) { |
| OpenFlowSwitch sw = controller.getSwitch(Dpid.dpid(flowRule.deviceId().uri())); |
| sw.sendMsg(new FlowModBuilder(flowRule, sw.factory()).buildFlowMod()); |
| } |
| |
| |
| |
| @Override |
| public void removeFlowRule(FlowRule... flowRules) { |
| for (int i = 0; i < flowRules.length; i++) { |
| removeRule(flowRules[i]); |
| } |
| |
| } |
| |
| private void removeRule(FlowRule flowRule) { |
| OpenFlowSwitch sw = controller.getSwitch(Dpid.dpid(flowRule.deviceId().uri())); |
| sw.sendMsg(new FlowModBuilder(flowRule, sw.factory()).buildFlowDel()); |
| } |
| |
| @Override |
| public void removeRulesById(ApplicationId id, FlowRule... flowRules) { |
| // TODO: optimize using the ApplicationId |
| removeFlowRule(flowRules); |
| } |
| |
| |
| //TODO: InternalFlowRuleProvider listening to stats and error and flowremoved. |
| // possibly barriers as well. May not be internal at all... |
| private class InternalFlowProvider |
| implements OpenFlowSwitchListener, OpenFlowEventListener { |
| |
| private final Map<Dpid, FlowStatsCollector> collectors = Maps.newHashMap(); |
| private final Multimap<DeviceId, FlowEntry> completeEntries = |
| ArrayListMultimap.create(); |
| |
| @Override |
| public void switchAdded(Dpid dpid) { |
| FlowStatsCollector fsc = new FlowStatsCollector(controller.getSwitch(dpid), POLL_INTERVAL); |
| fsc.start(); |
| collectors.put(dpid, fsc); |
| } |
| |
| @Override |
| public void switchRemoved(Dpid dpid) { |
| collectors.remove(dpid).stop(); |
| } |
| |
| @Override |
| public void portChanged(Dpid dpid, OFPortStatus status) { |
| //TODO: Decide whether to evict flows internal store. |
| } |
| |
| @Override |
| public void handleMessage(Dpid dpid, OFMessage msg) { |
| switch (msg.getType()) { |
| case FLOW_REMOVED: |
| //TODO: make this better |
| OFFlowRemoved removed = (OFFlowRemoved) msg; |
| |
| FlowEntry fr = new FlowEntryBuilder(dpid, removed).build(); |
| providerService.flowRemoved(fr); |
| break; |
| case STATS_REPLY: |
| pushFlowMetrics(dpid, (OFStatsReply) msg); |
| break; |
| case BARRIER_REPLY: |
| case ERROR: |
| default: |
| log.debug("Unhandled message type: {}", msg.getType()); |
| } |
| |
| } |
| |
| @Override |
| public void roleAssertFailed(Dpid dpid, RoleState role) { |
| // TODO Auto-generated method stub |
| |
| } |
| |
| private synchronized void pushFlowMetrics(Dpid dpid, OFStatsReply stats) { |
| if (stats.getStatsType() != OFStatsType.FLOW) { |
| return; |
| } |
| DeviceId did = DeviceId.deviceId(Dpid.uri(dpid)); |
| final OFFlowStatsReply replies = (OFFlowStatsReply) stats; |
| //final List<FlowRule> entries = Lists.newLinkedList(); |
| |
| for (OFFlowStatsEntry reply : replies.getEntries()) { |
| if (!tableMissRule(dpid, reply)) { |
| completeEntries.put(did, new FlowEntryBuilder(dpid, reply).build()); |
| } |
| } |
| |
| if (!stats.getFlags().contains(OFStatsReplyFlags.REPLY_MORE)) { |
| log.debug("sending flowstats to core {}", completeEntries.get(did)); |
| providerService.pushFlowMetrics(did, completeEntries.get(did)); |
| completeEntries.removeAll(did); |
| } |
| } |
| |
| private boolean tableMissRule(Dpid dpid, OFFlowStatsEntry reply) { |
| // TODO NEED TO FIND A BETTER WAY TO AVOID DOING THIS |
| if (reply.getVersion().equals(OFVersion.OF_10) || |
| reply.getMatch().getMatchFields().iterator().hasNext()) { |
| return false; |
| } |
| for (OFInstruction ins : reply.getInstructions()) { |
| if (ins.getType() == OFInstructionType.APPLY_ACTIONS) { |
| OFInstructionApplyActions apply = (OFInstructionApplyActions) ins; |
| List<OFAction> acts = apply.getActions(); |
| for (OFAction act : acts) { |
| if (act.getType() == OFActionType.OUTPUT) { |
| OFActionOutput out = (OFActionOutput) act; |
| if (out.getPort() == OFPort.CONTROLLER) { |
| return true; |
| } |
| } |
| } |
| } |
| } |
| return false; |
| } |
| |
| } |
| |
| |
| |
| |
| } |